A fanstastic story told by one of my colleagues (who shall remain nameless) about a family holiday to Spain.

He and his parents were sitting in a café in Spain. They all were suffering from "holiday tummy", which is crucial to this tale. The mother of the family felt a big fart coming on, but being a lady, thought she could let one out quietly.
At this juncture it should be mentioned that the café furniture consisted of plastic chairs, an acoustically hazardous material in such situations. Sure enough, just as the background music faded, mother emitted an ear-popping BRRAAAAP!

It just so happened that at the next table, a Scottish family was having their tapas. The father of the family turned round and said, "Huv that yin oan me, missus!", much to the embarassment of my colleague's mother.

My colleague's father, on the other hand, found this all so desprately funny that he was seized by a laughing fit. He laughed and laughed, long and hard.....

...until he shat himself.

The same fate almost befell me when this tale was related to me.